Does sweat affect the 5 conductive-fabric touch pads or the LED matrix?

The outer compression sleeve is built for athletic wear, and the 8×32 LED + BLE module sits inside an inner pocket that slides out in 5 seconds so you can cold-wash the fabric sleeve after every long run.

Can I set custom run/walk interval ratios for a Couch-to-5K group?

Yes. Ask the Sleeve Studio app in Sleeve Studio for any custom interval timer (e.g., 3 minutes run in teal, 1 minute walk in amber) and load the mode over Bluetooth before the warmup.

How visible is the forearm display on early-morning or evening city runs?

Dawn, dusk, and night run clubs are where the 256 diffused RGB LEDs shine brightest—readable from 30+ feet back in the pack while doubling as active roadside visibility.

Use Case #20 · Eyes-Free Navigation, Mobility & Outdoors · All 50 Modes

Run-Club Pacer Forearm LED Pace Board & Split Timer Sleeve

Designed for marathon, half-marathon, and 5K run-club pacers, the Garment GUI LED & Touch Sleeve displays live target pace (`4:30/KM` or `7:15/MI`) and interval countdowns across an 8×32 RGB LED forearm matrix facing the pack behind you—eliminating lollipop sticks and mid-stride watch checks ($199 preorder).

The whole pack reads it: Raise your forearm to flip target pace, split deltas, and interval countdowns to the 30+ runners behind you.
Humid-run proof: A featherweight compression sleeve with a 5-second slide-out pod you cold-wash after every long run — no cardboard sign to carry.
Pre-loaded & customizable: Ships as one of 50 built-in modes; set your split, intervals, and alerts in the Sleeve Studio app.

Preorder Sleeve · $199 Free US Shipping Try in Sleeve Studio →

▶ See the 8×32 Forearm Display in Action

Watch the 8×32 RGB LED matrix and 5 conductive-fabric touch pads running cycling, running, navigation and commute modes on the forearm sleeve. Concept render · simulated 8×32 display · first production run of 500 units.

Why Holding Wooden Pacer Signs or Checking Small GPS Watches Breaks Running Form

Keep your arm swing: No cardboard pace sign for 26.2 miles and no mid-stride wrist twists to read a tiny watch face in a dawn pack.
Read from behind: 30+ runners see the group’s split and interval state at eye level without breaking stride or heel-clipping.
Peer-reviewed textile roots, shipping hardware: The Oct 2026 NUS Nature paper coined “garment GUI” with a lab-only woven pixel fibre (not for sale); our shipping $199 sleeve uses 5 sewn conductive-fabric pads and a removable 8×32 LED pod.

What Each Forearm Pad Does (Pads 1–5)

Pad 1 (Elbow)Single tap — Start / lap current kilometer or mile split timer · LED cue: Flashes green SPLIT OK + delta (-0:03 AHEAD)

Pad 2 (Upper Mid)Single tap — Trigger 60s Run / 30s Walk interval countdown bar · LED cue: 32 columns drain in teal (RUN) then amber (RECOVERY)

Pad 3 (Center)Single tap — Cycle readout: Target Pace / Elapsed Time / Heart-Rate Zone · LED cue: Scrolls: PACE 7:15/MI · ZONE 2

Pad 4 (Lower Mid)Single tap — Flash 'WATER STATION 200M' alert to the pack · LED cue: High-contrast blue wave + WATER 200M

Pad 5 (Wrist)Double tap — Activate a dusk/dawn high-visibility turn pattern · LED cue: White/amber alternating outer-arm strobe

Customize in 30 seconds: Pick this mode in the Sleeve Studio app, type or speak new words, colors, or pad actions, and tap Send over Bluetooth — no code.

Connected feature: Live pace and splits are a connected feature: they depend on data from a compatible paired device or running app integration.

Frequently Asked Questions

Does sweat affect the 5 conductive-fabric touch pads or the LED matrix?: The outer compression sleeve is built for athletic wear, and the 8×32 LED + BLE module sits inside an inner pocket that slides out in 5 seconds so you can cold-wash the fabric sleeve after every long run.
Can I set custom run/walk interval ratios for a Couch-to-5K group?: Yes. Ask the Sleeve Studio app in Sleeve Studio for any custom interval timer (e.g., 3 minutes run in teal, 1 minute walk in amber) and load the mode over Bluetooth before the warmup.
How visible is the forearm display on early-morning or evening city runs?: Dawn, dusk, and night run clubs are where the 256 diffused RGB LEDs shine brightest—readable from 30+ feet back in the pack while doubling as active roadside visibility.

Run This Mode on Your Forearm — Reserve Batch 01 ($199)

Complete hardware + 50 modes ($199): 8×32 RGB LED matrix (256 pixels), 5 sewn conductive-fabric touch pads, and a 5-second slide-out washable electronics pod.
Sleeve Studio app ships first: Personalize all 50 modes in plain words before your sleeve arrives (small monthly subscription; zero code).
Zero-risk preorder: First run of 500 units (~30 days to production), free US shipping, 100% refund anytime before shipping + 90-day money-back guarantee.

Preorder Sleeve · $199 Free US Shipping Open Sleeve Studio Full Hardware Specs

Watch → Prove → Buy

Not ready to order yet? Take the next step.

See the hardware in motion, read the peer-reviewed textile research behind it, or reserve your spot in the first production run of 500 sleeves.

STEP 1Watch the sleeve in action Five soft touch pads, an 8×32 RGB LED display, Bluetooth, and a removable electronics pod for gentle washing. See the hardware → STEP 2See how the app customizes any mode Pick from 50 pre-built modes or type a new one in plain words. The Sleeve Studio app ships before your hardware. See Sleeve Studio → STEP 3Preorder the Sleeve — $199 First run of 500. ~30 days to production. Free US shipping. Full refund anytime before it ships. Order now →

90-day money-back guarantee, plus a full refund any time before the sleeve ships.

Questions about your setup? Call +1 725-338-4835 or email alex@midnightdev.dev.